Swaps and barter in the playground

Tests: 4 of 11 right · Exam: 0 of 4 right · Kind: ★ · Understood: 9 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 4 of the money course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · ★ · wrong ✗

Your mate goes "Pikachu for your shiny, deal or no deal, bruv?" You find out the shiny is way rarer. What's smart?

1. Swap and then tell everyone he's thick — ← Mova's choice · no support
2. Say no thanks, or ask for a fairer swap — ✓ the right answer · no support
3. Give him both cards to be nice — no support
4. Swap anyway, all cards are worth the same — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 2 · ★ · wrong ✗

Matty grumbles, "bloody unfair, they banned swaps, it's MY cards!" What's the school's reason?

1. Swapping cards is a crime in Britain — ← Mova's choice · no support
2. Swaps kept causing fights and tricks, so it's about safety — ✓ the right answer · no support
3. The cards belong to the school once you bring them in — no support
4. Teachers want to collect the cards and sell them online — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 3 · ★ · wrong ✗

Ollie reckons "if it's 2 for 1, I always win cos I get the rare one." Is he right?

1. Not always, the "rare" one might be common and he loses a card — ✓ the right answer · no support
2. No, swaps can never be fair — ← Mova's choice · score 1
3. Yes, 1 card is always worth more than 2 — no support
4. Yes, getting the rare one always means you win — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 1, the only option with support. Its support: lesson 4, line 7: «A fair swap is one both people agree to freely; forcing someone with a threat is bullying, not trading.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «fair swap» (+2); the same property (+1); the same light verb (be, have, do, get, go) (+1). Against it: one says «not», the other does not (counts against) (-3). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 4 · ★ · wrong ✗

Glasgow nan: "Nae swappin' food, son, wee Ruby's got a nut allergy." ("Nae" means no; "wee" means little.) Why?

1. Ruby's mum wants the food back — no support
2. Swapping food is only allowed on Fridays — ← Mova's choice · score 3
3. Nuts cost too much to give away — score 0
4. Swapped food could make Ruby really ill — ✓ the right answer · score 1

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 3, against 1 for the next best. Its support: lesson 4, line 13: «Many schools ban swapping food because some children have allergies, which can make them very ill.», reached through the same lesson line as the sentence the question matched. What matched: the same action «swap» (+2); the same thing acted on «food» (+2). Against it: a different doer (counts against) (-1). The right option, 4, scored 1. · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · wrong ✗

Bus kid: "my card's worth a tenner online, no cap!" His mate offers 50p. What's it really worth to buy right now?

1. Nothing, cards are never worth money — ← Mova's choice · score 9
2. What someone will actually pay, here 50p — ✓ the right answer · score 8
3. £10.50, the two prices added — score 6
4. £10, because that's what the website says — no support

Why: It took the question to ask what it is done to. It chose option 1 with score 9, against 8 for the next best. Its support: lesson 1, line 10: «Money can be cash (coins and notes) or digital money (numbers kept by a bank and spent with a card or phone); both buy the same things.», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same thing acted on «cash» (+3); the same light verb (be, have, do, get, go) (+2). The right option, 2, scored 8. · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · right ✓

What would happen if there were no money at all and you wanted bread?

1. You'd have to find a baker who wants something you have — ← Mova's choice · ✓ the right answer · score 0
2. The bread would cost exactly one sticker, the same everywhere — score 0
3. You'd pay the baker with a promise to smile and say thank you — no support
4. You'd get bread free from any shop, because nobody could charge — no support

Why: It took the question to ask what happens next. It chose option 1 with score 0, tied with another option at 0 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 4, line 3: «Barter has a big problem: Aisha wants Jayden's slime, but Jayden wants crisps, not her stickers, so there is no deal; money fixes this because everybody takes…», reached through what followed the sentence the question matched. What matched: the same action «want» (+4). Against it: a different doer (counts against) (-2); a different thing acted on (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · right ✓

Lena gave her £3 pen for a 20p pencil "cos Tia begged". Her mum says it's fine, if...?

1. ...Tia pays her back £3.20 by the end of the week — no support
2. ...the pencil turns out to be made of real gold — no support
3. ...she meant it as a gift, not a swap — ← Mova's choice · ✓ the right answer · score -1
4. ...she does the same swap again every single day — no support

Why: It took the question to ask which statement is true. It chose option 3 with score -1, the only option with support. Its support: lesson 4, line 11: «A gift is something you give for nothing back; a swap should be about equal value unless you mean it as a gift.», reached through the same lesson line as the sentence the question matched. What matched: the same action «mean» (+2); the same circumstance (+2). Against it: a different doer (counts against) (-1); a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 8 · ★ · right ✓

Grandad: "After the war we swapped a dozen eggs for a pair of socks." How many eggs is a dozen?

1. 12 — ← Mova's choice · ✓ the right answer · no support
2. 20 — no support
3. 6 — no support
4. 10 — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 9 · ★ · wrong ✗

Ella's neighbour says "win-win, innit" about the scooter swap. What does that mean?

1. Both of them ended up better off — ✓ the right answer · no support
2. Nobody got anything at all — ← Mova's choice · score 7
3. Both of them lost the swap — score 6
4. Only the neighbour won the deal — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 7, against 6 for the next best. Its support: lesson 1, line 1: «Money is anything that everybody agrees to swap for things, and today that means coins, notes and numbers in a bank.», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same thing acted on «anything» (+3). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · right ✓

Kyle says to Ellie "Gimme 3 cards or you're dead, lol jk." ("jk" means just joking.) What should she still do?

1. Swap 2 cards so it's fairer — no support
2. Say no, walk away and tell a teacher if he keeps on — ← Mova's choice · ✓ the right answer · score 8
3. Give him the cards, because he said it was only a joke — score 8
4. Threaten him back to make it even — no support

Why: It took the question to ask what is done. It chose option 2 with score 8, tied with another option at 8 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 1, line 7: «A note or coin is worth what it says because people trust that everyone else will accept it too.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+6); the same action «say» (+4). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · wrong ✗

A Scouse lad goes, "I'll do your Friday dinner duty if you do me Tuesday, sound?" ("Sound" means okay.) What kind of swap is that?

1. A swap of time and help — ✓ the right answer · no support
2. A swap of money — score 6
3. A threat dressed as a deal — no support
4. A gift with nothing back — ← Mova's choice · score 14

Why: It took the question to ask what it is done to. It chose option 4 with score 14, against 6 for the next best. Its support: lesson 4, line 4: «A swap made with a threat is not a swap at all but bullying, and a "swap" where you give far more than you get is really a gift, so call it one if that is what…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+6); the same thing acted on «gift» (+4); the same circumstance (+4); the same light verb (be, have, do, get, go) (+2). Against it: a different doer (counts against) (-2). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Which of the following statements most accurately characterises the practice designated "barter"?

1. The accumulation of coins within a receptacle — ← Mova's choice · no support
2. The purchase of goods by means of a bank card — no support
3. The lending of money subject to repayment with interest — no support
4. The exchange of goods or services without recourse to money — ✓ the right answer · no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Identify the principal deficiency of barter as a means of trade.

1. Goods exchanged by barter invariably lose their value — ← Mova's choice · score 3
2. Barter is forbidden by law in all jurisdictions — no support
3. Each party must possess precisely what the other desires — ✓ the right answer · no support
4. Barter requires the involvement of a bank — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 3, the only option with support. Its support: lesson 4, line 5: «Barter means swapping goods or help without using money.», reached through the same lesson line as the sentence the question matched. What matched: the same thing acted on «goods» (+2); the same circumstance (+2). Against it: a different action (counts against) (-1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

It is given that a pen valued at three pounds is exchanged for a pencil valued at twenty pence. Ascertain the excess of value surrendered by the owner of the pen.

1. One pound eighty pence — ← Mova's choice · no support
2. Three pounds twenty pence — no support
3. Two pounds eighty pence — ✓ the right answer · no support
4. Two pounds twenty pence — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Select the response consistent with the established facts concerning an exchange procured by means of a threat.

1. It constitutes barter of the most efficient kind — ← Mova's choice · no support
2. It constitutes a gift on the part of the threatener — no support
3. It constitutes bullying and not a genuine exchange — ✓ the right answer · no support
4. It constitutes a lawful and fair exchange — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

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